Pump



Jan. 11

E. RAINER PUMP Filed May 27, v192e Patented Jan. 11, 1927.

UNITED STATES EARL RAINER, 0F OAK HILL, OHIO.

PUMP.

Application led May 2,7,

This invention relates Ato pumps and has for a particular object thereofthe production of a pumpwhich is free from valves of the type usuallyemployed.

A more specific object of the invention 1s to produce a pump in whichthe cylinder of the pum is employed to control the intake and disc argeof Huid to the cylinder.

A further object of the invention is to provide a device of thischaracter which may be very cheaply produced, which will be durable andefficient in service and a general improvement in the art. f

These and other objects T attain by the construction shown in theaccompanying drawing, wherein for the purpose of illustration is shown apreferred embodiment of my invention and wherein Figure 1 is a sideelevation of a pump constructed in accordance with my invention;

Figure 2 is a vertical sectional view therethrough; .i

Figure 3 is a section on the line 3-3 of Fi ure 2.

eferring now more particularly tothe drawings, the numeral 10 generallydesignates a cylinder having arranged therein a` piston 11, the rod 12of which projects through one end head 13 of the cylinder. The oppositeend head 14 of the cylinder is rovided with a gear wheel 15, the endheads eing in each instance rigidly secured to the ends ofthe cylinderwall.

The cylinder wall is provided at its ends with outstanding flanges 16and between these flanges, the periphery of the wall is provided` with asuccession of annular grooves 17. Intake and exhaust chambers 18 and 19are provided, each of a size fitting between the end flanges of the`cylinder wall and having their inner faces curved to conform to thecurvature of the cylinder wall and provided with grooves complementaryto the grooves of the cylinder wall. The inta-ke and exhaust chambersare provided with flanges 183,19a continuing the inner surface thereof,so that these sections are semi-spherical and may be bolted togetherabout the cylinder. The assembled casing including the intake andexhaust chambers has a rotating fit upon the periphery of the cylinderand is held against longitudinal movement thereon not only by the endflanges 16 but likewise by the interdentation of the teeth formed by thegrooves on the coacting faces of the cylinder and casing.

rod 13.

`rives at the end of its stroke.

1926. Serial No. 112,077.

Each chamber 18 and 19 has at its ends ports 18h, 19b for coaction withports 21 and 22 formed in the cylinder adjacent opposite ends thereofand at dia-metrically opposed points upon the cylinder. Y

Means are provided for intermittently rotating the cylinder 10. Inthepresent instance, these means are shown as comprisin a gear 23 meshingwith the gear 15 of the head 142 and intermittently operated through alink motion 24 from the shaft 25 employed for reciprocating the piston11. This link motion may be of any desired type and in the presentinstance is disclosed as including an arm 26 mounted upon a fixed pivotV27 and connected by a link 28 with a crank 29 of a shaft 30 upon whichthe gear 23 is secured. The arm 26 is actuated through a crank 31secured to the shaft 25 and having pivoted thereto a link 32 which has apin and slot engagement with the arm 26 at It will be obvious that theseconnections will oscillate the crank 29 with the result that thecyiinder 10 will be alternately rotated in opposite directions. Thisrotation isthrough 180.

It will be lobvious that it is desirable that the piston 11 beheldagainst motion during the period when the cylinder is rotating, asthrough the major portion of this rotation, the ports 21, 22 of thecylinder are out of alignment with'the ports of the intake and exhaustchambers and reciprolcation of the piston will be very highly resisted.For this reason, I actuate the piston 11 by a cam 34 secured to theshaft 25 and operating within a yoke 35 secured to the This cam has afiat 36 which is curved with the center of the shaft 25 as an axis andthis flat aligns with thrust faces 37 of the yoke 35 when the piston ar-The link motion is synchronized with the cam, so that the rotation ofthe cylinder takes place while the flat 36 is sweeping across thecoacting thrust face 37.

In the sectional view of Figure 2, the piston is illustrated as justarrived at one end of its stroke. It will be noted that the fiat 36 isso positioned that the piston rwill remain stationary while the shaft 25is rotating through approximately At this time, the parts of the linkmotion are in the position illustrated in Figure 2, and the thrust isbeing initially applied to the link 28. This thrust will rotate thecylinder 1Q through 180, removing the port 21 from communication withthe port lflb at one end of the exhaust chamber 19 and placing this port2l in communication with the port 18 at the corresponding end of thesuction chamber. The port 22 which has been in communication with theport 18b at the opposite end of the suction chamber is transferred forcommunication with the port i9 at the crank end of the exhaust chamber.lVhen this operation has been completed and the shaft 25 is rotatedthrough 600, the link motion becomes idle and remains idle While thepiston is being shifted and the shaft 25 is rotating through 1200 atwhich time the latSG ceac-ts With the thrust Wall 37 of the yoke at theopposite side of the yoke and the linkmotion is again brought into playto reverse the position of the port. It will be obvious that a device ofthis character may be very readily and cheaply produced and-Will bedurable and efficient in service.

t will also be obvious that the construction hereinbefore set forth iscapable of a certain range of change and modification Without materiallydeparting from the spirit of the invention and l accordingly do notlimit myself to such specific stgucture except as hereinafter claimed.

I claim l. In a pump, a cylinder, a piston mounted therein, a casingexteriorly fitting the cylinder and having circumferentially spacedintake and exhaust chambers each having at each end thereof portsaligning with opposite ends of the cylinder, each end of the cylinderhaving a port rotatably alignable with the ports of the correspondingend of the intake and exhaust chambers, means for reciprocating thepiston including a. rotatable sliaft and means operated by the rotationof the shaft for intermittently rotating the cylinder.

2: In a pump, a cylinder, a piston mounted therein, a casing exteriorlyfitting the cylinder and having circumferentially spaced intake andexhaust chambers each having at each end thereof ports aligning withopposite ends of the cylinder, each end of the cylinder having a portrotatably alignable with the ports of the corresponding end of theintake and exhaust chambers, means for reciprocating the piston wherebythe piston has alternate movements in opposite directions and ismaintained stationary for a predetermined interval intermediatealternate movements and means for rotating the cylinder during saidintervals to reverse the alignment of the ports of the cylinder vviththe ports of saidchamber.

3. In a pump, a cylinder, a piston mounted therein, a casing exteriorlytting the cylinder and having circumferentially spaced intake andexhaust chambers each having at each end thereof ports aligning vvithopposite ends of the cylinder, each end of the cylinder having a portrotatably alignable ivith the ports of the corresponding end of theintake and exhaust chambers, means for reciprocating the piston, aconnection betvveen the shaft and piston whereby the piston -hasalternate movements in opposite directions and is maintained stationaryfor a Apredetern'iined interval intermediate alter- `nate movements,means for rotating the cylinder during said intervals to reverse thealignment of the ports of the cylinder' with the ports-of saidchamberincluding a crank on said shaft, a second shaft having a crank, agear secured to the second shaft meshing with the gear axially securedto the piston, a pivotedarm, a link connecting the crank of the secondshaft With said arm and a second link connecting the crank of the firstnamed shaft ivith said arm, the last named link having lost motion.

a. In a pump, a cylinder, a piston mounted therein, a casing exteriorlyfitting the cylinder and having circumferentially spaced intake andexhaust chambers each having at each end, thereof ports aligning Withopposite ends of the cylinder, each end of the cylinder having a portrotatably alignable Wit-h the ports of the corresponding end of theintake and exhaust chambers, means for reciprocating the pistonincluding a rotatable shaft and means operated by the rotationof theshaft for intermittently rotating the cylinder, said cylinder and casinghaving interengaging circumferentially extending corrugations.

5. In apurnp, a cylinder, a piston mounted therein, a casing exteriorlyfitting the cylindcr and having circumferentially spaced intake andexhaust chambers each having at each end thereof ports aligning Withopposite ends of the cylinder, each end of the cylinder having a portrotatably alignable withthe ports of the corresponding end of the intakeand exhaust chambers, means for reciprocating the piston including arotatable shaft and means operated by the rotation of the shaft forintermittently rotating the cylinder, said cylinder and casing havingintcrengaging circumferentially extending corrugations, the ends of thecylinder having outstanding flanges abutting t-he ends of the casing.

5. In a pump, a cylinder, a piston mounted therein, a casing exteriorlyfitting the cylinder and having circumferentially spaced intake andexhaust chambers each having at each end thereof ports aligning Withopposite ends of the cylinder, each end of the cylinder having a portrotatably alignable with the ports of the corresponding end of theintake and exhaust chambers, means for reciprocating the pistonincluding a rotatable shaft and means operated by the rotation of theshaft for intermittently rotating lili the cylinder, the ends of thecylinder having outstanding flanges abutting the ends of the casing.

7 In a pump, a cylinder, a piston mounted therein, a casing eXteriorlyiitting the cylinder and having circumferentially spaced intake andexhaust chambers, each having at each end thereof ports aligning withopposite ends of the cylinder, each end of the cylinder having a portrotatably' alignable With the ports of the corresponding end of theintake and exhaust chambers, means for reciprocating the pistonincluding arotatable shaft, a connection between the shaft and pistonwhereby the piston has alternate movements in opposite directions and ismaintained stationary for a predetermined interval intermediatealternate movements and means operated by the rotation of the shaft forrotating the cylinder during those periods when the piston isstationary.

In testimony whereof I hereunto afix my signature.

EARL RAINER.

